I have a recently updated edition Win10 Home, Malwarebytes 3.0, Spybot 2.5, and I want to run Win Defender, too. I tried to immunize my system and couldn't finish the job. Immunize doesn't tell me who the bad actor is, Defender is off because of Spybot, which leaves Malwayebytes, but it doesn't report an attack. So who is the bad actor?

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I went through a long process of trying to get Malwarebytes to resolve why Defender didn't like Malwarebytes. I fixed that problem and Defender came up without a complaint. I restored Spybot and Defender stopped working. I've sent a note to support about this issue. As I said in my message, I believe in "defense in depth".